公开(公告)号：WO2014004298A1

公开(公告)日：2014-01-03

申请号：PCT/US2013/047063

申请日：2013-06-21

Applicant: INVISTA TECHNOLOGIES S.À.R.L.

Inventor： HAMILTON, Clive, Alexander ,  NEATE, Robert, Edward

IPC: C08G63/90 ,  C08G63/82 ,  B01D53/76 ,  B01D53/46 ,  B01D53/02

CPC classification number: C08G63/785 ,  B01D53/78 ,  B01D53/8678 ,  B01D2251/506 ,  B01D2252/2025 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2256/10 ,  B01D2256/18 ,  B01D2256/22 ,  B01J2219/00006 ,  C08G63/78 ,  C08G63/80 ,  C08G63/90

Abstract: The invention relates to a method for producing a high molecular weight polyethylene terephthalate (PET) via a solid state polymerization system. The method comprises using an acid catalyst to effectuate the conversion of acetaldehyde present within the system to 2 -methyl- 1,3-dioxolane, which can be readily removed. The invention also relates to PET prepared via this process, which can advantageously exhibit low levels of acetaldehyde.

Abstract translation: 本发明涉及通过固相聚合体系制备高分子量聚对苯二甲酸乙二醇酯（PET）的方法。 该方法包括使用酸催化剂来实现体系内存在的乙醛向2-甲基-1,3-二氧戊环的转化，其可以容易地除去。 本发明还涉及通过该方法制备的PET，其可有利地显示低水平的乙醛。

公开(公告)号：EP2718002A2

公开(公告)日：2014-04-16

申请号：EP12797249.5

申请日：2012-06-04

Applicant: Invista Technologies S.à.r.l.

Inventor： HAMILTON, Clive, Alexander ,  NEATE, Robert, Edward

IPC: B01J3/02 ,  B01J19/24 ,  C08F2/01 ,  C08G63/183

CPC classification number: B01J19/24 ,  B01J14/00 ,  B01J19/006 ,  B01J2219/00094 ,  B01J2219/00162 ,  B01J2219/00777 ,  C08G63/181 ,  C08G63/785

Abstract: Disclosed are processes and systems for manufacturing polyethylene terephthalate (PET) and pre-polymer. The processes and systems use a variable pressure drop up-flow-pre-polymerizer configuration. The pressure profile in the UFPP can be selected to beneficially change the relative reaction rates of the polymerization and esterification reactions. This design maximizes the esterification carried out in the UFPP, while still producing a pre-polymer with the optimum carboxyl end groups concentration {e.g., about 30 μ equiv./g to 60 μ equiv./g) to maximize finisher productivity. This can result in a reduction of the size and cost of the esterifier required for a given plant throughput.

公开(公告)号：EP2970038A1

公开(公告)日：2016-01-20

申请号：EP14763830.8

申请日：2014-03-14

Applicant: Invista Technologies S.à.r.l.

Inventor： NEATE, Robert, Edward ,  HAMILTON, Clive, Alexander ,  STILSON, Robert, E. ,  WILLIAMSON, George, Malcolm ,  RUNNACLES, Jonathan, D.

IPC: C07B41/12 ,  B01J19/24 ,  C07C69/84 ,  C08G63/183

CPC classification number: F22B1/16 ,  B01J8/0015 ,  B01J8/0065 ,  B01J8/20 ,  B01J19/1881 ,  B01J2208/00176 ,  B01J2219/00103 ,  C07C67/08 ,  C07C69/82

Abstract: The invention relates to recycling steam at elevated temperature and/or pressure generated within a thermosiphon esterifier design comprising a riser baffle in the vapor separator. Advantageously, the thermosiphon esterifier design can provide steam that can be employed in various additional processes and can thus provide an overall energy savings in operating the thermosiphon esterifier. Methods of using the steam are also described.

Abstract translation: 本发明涉及在蒸汽分离器中在包括提升器挡板的热虹吸酯设计中产生的升高的温度和/或压力下再循环蒸汽。 有利的是，热虹吸酯酯化物设计可以提供可用于各种附加工艺中的蒸汽，并且因此可以在操作热虹吸酯酯化物时提供总体节能。 还描述了使用蒸汽的方法。

公开(公告)号：EP2867274A1

公开(公告)日：2015-05-06

申请号：EP13810798.2

申请日：2013-06-21

Applicant: Invista Technologies S.à.r.l.

Inventor： HAMILTON, Clive, Alexander ,  NEATE, Robert, Edward

IPC: C08G63/90 ,  C08G63/82 ,  B01D53/76 ,  B01D53/46 ,  B01D53/02

CPC classification number: C08G63/785 ,  B01D53/78 ,  B01D53/8678 ,  B01D2251/506 ,  B01D2252/2025 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2256/10 ,  B01D2256/18 ,  B01D2256/22 ,  B01J2219/00006 ,  C08G63/78 ,  C08G63/80 ,  C08G63/90

Abstract: The invention relates to a method for producing a high molecular weight polyethylene terephthalate (PET) via a solid state polymerization system. The method comprises using an acid catalyst to effectuate the conversion of acetaldehyde present within the system to 2 -methyl- 1,3-dioxolane, which can be readily removed. The invention also relates to PET prepared via this process, which can advantageously exhibit low levels of acetaldehyde.

公开(公告)号：EP2807208A1

公开(公告)日：2014-12-03

申请号：EP13703240.5

申请日：2013-01-25

Applicant: Invista Technologies S.à.r.l.

Inventor： DORAI, Suri, N. ,  HAMILTON, Clive, Alexander ,  SUN, Qun

IPC: C08G65/20 ,  C08G65/30

CPC classification number: C08G65/00 ,  C08G65/20 ,  C08G65/30 ,  C08G65/32 ,  Y02P20/127

Abstract: The present invention provides an improved process for converting a diester of polyether polyol, e.g., PTMEA, to the corresponding dihydroxy product, e.g., polytetramethylene ether glycol (PTMEG) continuously in a reaction zone, such as, for example, a reactive distillation system, for achieving virtually complete conversion of PTMEA to PTMEG, and recovery of PTMEG free of unreacted or unconverted PTMEA and alkanol ester by-product.

Abstract translation: 本发明提供了一种改进的方法，用于将聚醚多元醇例如PTMEA的二酯连续地在反应区例如反应性蒸馏系统中转化成相应的二羟基产物例如聚四亚甲基醚二醇（PTMEG） 用于实现PTMEA实际上完全转化为PTMEG，以及回收不含未反应或未转化的PTMEA和链烷醇酯副产物的PTMEG。